(19)

(11)

EP 0 190 250 A1

(12)

(43) Date of publication: 13.08.1986 Bulletin 1986/33 (21) Application number: 85903867.0 (22) Date of filing: 12.08.1985

(51) International Patent Classification (IPC):  E04B 2/ 86( . ) (86) International application number: PCT/GB1985/000356 (87) International publication number: WO 1986/001243 (27.02.1986 Gazette 1986/05)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 11.08.1984 GB 19840020467 (71) Applicant: IVYPLACE LIMITED Worcestershire WR10 1AA (GB)	(72) Inventors: BIRD, Kenneth, Leonard, Victor Plymouth PL3 5BH (GB) GRIFFITHS, James, William, John Plymouth PL3 4ER (GB) THOMSON, Ernest, Bruce, Robert Near Kingsbridge TQ7 4HP (GB)